ok, I'll update the tutorial later to an alternative download which is only 100MB. // Edit I've updated the tutorial with a Link to the Visual Studio 2010 Diagnostic Tool.
Are you using Version F12? http://www.gigabyte.com.tw/Support/Motherboard/BIOS_Model.aspx?ProductID=2749&ver=#anchor_os Are you using the latest drivers? http://www.gigabyte.com.tw/Support/Motherboard/Driver_Model.aspx?ProductID=2749&ost=windows+7+64bit#anchor_os
the dx.sys is related to your graphics card. Which graphics card do you use? make sure you are using the latest drivers! nDIS.sys is part of the networking functionality of Windows. So make sure that you use the latest network card drivers. The 3rd driver belongs to your sound card. Which one do you use? The 4th driver is the USB port driver. Have you installed the chipset drivers for your mainboard? which USb devices do you use?
You can't change DirectX in Windows Vista/7. Those DirectX DLLs are used for Windows Aero Glass. Which driver are you using for your Intel® GMA X4500? A driver directly from Intel or a modified driver form your PC maker?
This is NO monster folder. The files are only stored 1 time on your HDD and mapped as Hard Links to the destination folder. http://translate.google.de/translate?js=y&prev=_t&hl=de&ie=UTF-8&layout=1&eotf=1&u=http%3A%2F%2Fwww.windowsblog.at%2Fpost%2F2010%2F04%2F12%2FHowTo-Wie-groc39f-ist-mein-Windows-Ordner-wirklich.aspx&sl=auto&tl=en
I mean a Microsoft Product Support Services (PSS) call, if you have an issue with Windows. But as you found out is was an issue with your WLAN/ graphics card.
the other NIC may have an integrated chip which processes some tasks in hardware, while the WLAN adapter uses the CPU more. Because the ATI card causes the issue, contact the AMD/ATI support and tell them your results.
I think it may be caused by the PowerSaving feature of your mobile Intel i3 CPU. Which powerplan do you use? Try changing to high performance and disable all power saving features. Does it help? Or do you still have spikes from the ACPI.sys driver?